Tulcea, is generally a safe place, even during the nights. The crime rate is relatively low, and it is not common to face serious security issues. However, as it goes for any place in the world, it is always advisable to take the usual precautions. Avoid poorly-lit and deserted areas during night, and try to stick to main streets and densely populated areas where local businesses are open. Keep your belongings close, and familiarize yourself with emergency numbers just in case.